Effects of Sc doping on electrical conductivity of BaZrO3 protonic conductors

被引：0
|
作者：
GUO Ruisonga
机构：
来源：
RareMetals | 2012年 / 31卷 / 01期
基金：
中国国家自然科学基金;
关键词：
protonic conductor; perovskite; carrier concentration; mobility;
D O I：
暂无
中图分类号：
TF125 [粉末冶金制品及其应用];
学科分类号：
摘要：
BaZr1-xScxO3-0.5x (x=0.07,0.10,0.13,0.16) powders were prepared by solid-state reaction method,and ZnO was used as sintering aid.Samples with different amount of ZnO additive were sintered at 1450·C for 6 h in air.Single cubic perovskite phase proton conductors were obtained.Conductivity was measured by electrochemical workstation.It was shown that Sc doping could increase conductivity through enhancing the carrier concentration in the material,but excessive Sc content might decrease the carrier concentration because of its charge compensation.ZnO had an influence on carrier concentration and mobility and affected the electrical conductivity.2 mol% ZnO and 13 mol% ScO1.5 doped sample showed the highest DC conductivity of 3.6×10-3 S·cm-1 tested at 800·C in wet hydrogen atmosphere.
引用
收藏
页码：71 / 74
页数：4
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